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Check-All has become an internationally recognized company for quality, innovation, and cost efficiency. Check-All recognizes that the customer is #1 and will continue to build its foundation for success on SERVICE TO EACH CUSTOMER. Along with its many standard / space saving designs, Check-All can design and manufacture its pvc check valves for almost any application.

Conval handles each product we make with care. Whether it is a lift check valve or a pvc check valve, you can can be assured you`ll receive only the highest quality from us. From more information on our lift check valves or any of our products visit our website of give us a call.

For an experienced designer and manufacturer of pvc check valves, Coast Pneumatics is what you are looking for. Our valves can operate up to 10,000 PSI, and can be made from such materials as brass, aluminum, steel and stainless steel. Many standards and configurations available! We have a quality control program in place to ensure our customers get products made of high quality. Call us today! We look forward to working with you!

If you would like top of the line PVC check valves then please give one of our experts a call today! We are a world leader of high quality check valves and you will not be upset with the products you receive. These items are extensively tested and it our mission to provide you with only the best. Please give us a call today!

We offer a wide variety of valve products, including our PVC check valve, relief valve, and double check valve designs. It is our goal that all of our customers find the precise products to suit their needs. Whether you are looking for new valves or replacement valves, we can help you find the products that you need. Contact us for details today!

PVC Check Valve

PVC check valves are unidirectional flow regulators made of a
particularly versatile thermoplastic resin and easily suited to the
specific needs of industrial, commercial and even domestic check valve
applications. An acronym for polyvinyl chloride, PVC is a highly diverse
polymer that can be formulated to suit a number of check valve
applications. As check valves handle corrosive, acidic, basic and
abrasive materials, among others, it is important to have valves that
are chemically and physically compatible with the process streams they
encounter.

One of the most popular examples of plastic check valves, PVC apparatus are nontoxic and provide smooth flexible valve components. PVC is actually used as the seat of many metal valves, such as the brass check valve, as it compresses to form a tighter seal against backflow, the prevention of which is the main goal of all non return valves. The design varies among the many types of check valves available for different applications, but the basic concept behind them remains similar. Fluid or gas flowing in the proper forward direction creates enough pressure to open the valve by slightly displacing a piston, ball or disc. This stopper mechanism can only open in one direction. Reverse flow inversely pushes the plug back into the hole, creating an air tight seal that will not be opened again until forward flow pressure is greater than the back pressure. Because the operation is entirely reliant on the pressure flows of a process stream, they require no external activation or actuation, making installation easy in pre-existing pipes or cisterns.

While metals are often used in check valve design, PVC is just as common, as it is easily fabricated into precise shapes and offers many of the same qualities as metals with lower overhead cost. Because production of polyvinyl chloride requires much less petroleum than most other plastics, it is one of the most popular materials for valve construction. Most components made of this versatile polymer are produced through the suspension polymerization of water and vinyl chloride monomers. Stabilizers, lubricants and plasticizers may also be added to the mix to ensure the proper valve features for a given application. Combining the resins with additives allow for the production of plastic that is rigid or flexible, opaque or transparent and insulating or conductive. After processing, valve components are produced through extrusion, injection molding, stamping and in some instances die casting. Considerations for specific PVC composites include dimensions, pressure ratings and thermal capabilities, all of which may vary significantly depending upon the specific additives included in polymerization. The main weakness of PVC is its aversion to UV light. Check valves made of this material should not be used in outdoor applications without consideration for this. Check valve failure could lead to damaged equipment, product contamination, pressure surges and even flooding. As an acetal polymer product, PVC check valves offer high fatigue resistance and lubricity which help to improve product longevity.